CN103098024B

CN103098024B - Member in mobile intermediate equipment scene follows the tracks of and data are evicted from

Info

Publication number: CN103098024B
Application number: CN201180035759.8A
Authority: CN
Inventors: 大卫·克莱格; 埃文·爱尔兰; 哈瑞克里斯南·巴勒克里斯南; 黑摩尔·潘迪亚; 约翰内斯·阿尔贝蒂
Original assignee: Sybase Inc
Current assignee: Sybase Inc
Priority date: 2010-07-20
Filing date: 2011-07-15
Publication date: 2016-03-09
Anticipated expiration: 2031-07-15
Also published as: WO2012012294A2; CN103098024A; EP2596425A4; US20120023067A1; WO2012012294A3; WO2012012294A8; EP2596425A2; US8200624B2; EP2596425B1

Abstract

This application provides a kind of system, method and computer program product, it is for guaranteeing the consistance between user data in the client and its corresponding states in enterprise information system (EIS), within the system, as time goes by, data are moved, and subscription changes.Mobile service object (MBO) identifies the renewal or the change of set member of subscribing to, thus provides renewal for client and EIS system.For the user of client device screens the data be buffered, these users their interested data (namely its data of subscribing to) synchronous.In one embodiment, the method by remembeing that the set member for father's business object follows the tracks of set member on each remote identifiers/business object basis.When set member changes, the method sends to equipment and deletes notice, thus the member before removing.Public relation type in the method identification services scene also processes reference type relation and containing type relation.The method comprises key and follows the tracks of and member's tracking.

Description

Member in mobile intermediate equipment scene follows the tracks of and data are evicted from

Technical field

The present invention relates generally to user data synchronization, and more specifically, relates to for following the tracks of the communication means with synchronizing user data change.

Background technology

When (usually on the opportunity that user specifies) obtains connectivity by performing complete synchronous event, remote client and mobile device depend on traditionally and make set member's data synchronous with enterprise information system (EIS system).Such as, when mobile device is placed in docking frame (dockingcradle), it has EIS and connects.Once docking, mobile device can perform the Complete Synchronization of set member's data of upload and download.Because of efficiency cause, traditional mobile intermediate equipment server buffer from the data of rear end EIS, thus avoids repeated access.Intermediate equipment server also utilizes the medelling of some conventional arts promotion to buffer memory, quoting and relation for various style, and allow equipment user to be coherent business object by this data syn-chronization, guarantee consistance by amendment, this amendment is effective for the data of each Nodes in system simultaneously.

But, these traditional data synchronous method can not guarantee user on the client " subscription ", or continuity between the cached copies of data acquisition that refreshes and EIS data and consistance.This is because in conventional systems, when departing from along with the time when the reason that the EIS data trnascription of the buffer memory in client and the EIS system of correspondence operate due to regular traffic, can have problems, this client is browser application, flat computer, internet TV equipment, mobile device, the mobile intermediate equipment server that such as notebook computer, desktop computer, HTML5 activate.The example of these business operations comprises member's change of user's set.Such as, ticketing service is called in technical support can by reallocation to the different server technician in EIS, and this causes from set, evicting previous server technology personnel from (that is: removing) and in this set, inserting the server technology personnel newly specified.In most of the cases, the object being similar to work order has sole owner, and the indefinite property about specific technology personnel existed for a long time is extremely less desirable.

Therefore, expect that acquisition is improved one's methods, evict from, to guarantee the continuity between client user's data and business system for member's tracking and data.

Conventional art for the data between synchronizing moving client and enterprise servers creates at least two problems.A problem relates to client data and evicts from, and it causes Dangling Reference data.Such as, if the user of such as sales manager selects synchronously from the data of the current zones of different existed on his/her client device, so this is synchronized to the Dangling Reference of the product object on equipment before causing such as, and the sale instruction wherein relating to this product is deleted from equipment subsequently.In another example, the sale instruction project relating to product is synchronized to the mobile device with related products data in this sale instruction.When completing sale instruction and/or deleting sale instruction from EIS, the product quoted still is present on client device.These can be conceptualized as " Dangling Reference data ".Dangling Reference data cause two problems.First, Dangling Reference data occupy the space on client device, and when the data-carrier store/database of client device is filled, it can finally cause storage to expand and equipment failure.This is a problem for some client-side as the mobile device with limited storage space.Secondly, via inquiry and search (such as via findAll() operation) Dangling Reference data still can be quoted by the application program run on a client device, but these Dangling Reference data are outmoded, because it quotes is the data of being no longer correlated with.Even if these data are updated, new information also can not be downloaded to client.

Another problem produced for the conventional art of the data between synchronizing moving client and enterprise servers is when member's change occurs.Such as, when the synchronization parameter relating to geographic area is changed (such as, from Los Angeles to San Francisco), due to the change of collective standard, the such as data instance of mobile service object (MBO) example is no longer the member of set.In traditional synchro system, if synchronization parameter is changed, the related data so from the instance client end being no longer new set member can not be automatically moved or evict from.

Therefore, required is the method for automatically evicting data from the instance client end equipment being no longer new set member from.Another example causing needs to evict the business operation of data from from set subscribes to change.Therefore, further it is desirable that their data of user's direct control " subscription " can be allowed to enable them to control evict from the method for which type of data.

Summary of the invention

Embodiments of the invention comprise so a kind of technology, comprising in Data Migration and the environment along with the subscription of time variations, this technology adopts mobile intermediate equipment to guarantee the continuity between the user data on multiple mobile client device and its corresponding states in enterprise information system (EIS).This technology buffer memory on mobile intermediate equipment server, from the data of EIS, thus avoids repeated access.For the multiple equipment users needing its interested data synchronous, the data be buffered are screened, wherein, at different times, register interest via subscription.This technology maintains the needs that the data between the consistance of set member and each state are popularized.

Embodiments of the invention comprise for following the tracks of set member and evict the method for (that is: remove) data, system and computer program from from set.One embodiment of the present of invention comprise the method for the Data Update between synchronizing moving client device and enterprise information system (EIS).In one embodiment, the method comprises: detect the renewal of subscribing to mobile client device or detect for the change of the set member of mobile service object (MBO); Set up the surrogate list of overall unique agent key, this unique agent key is current is the part that mobile client device is subscribed to, wherein this list comprises the sub-mobile service object (MBOs) of being quoted by MBO, and be desirably in synchronous after this sub-mobile service object on the mobile client devices; For the user relevant to mobile client device screening is buffered EIS data, wherein, the subset of EIS data ordered by this mobile client device, that be buffered is selected in this screening; Respond the detection of evicting to member from set: send to mobile client device and delete notice, thus remove dispossessed member; And upgrade corresponding to the row being expelled out of member in surrogate list, thus represent undesirably there are the data relevant to this surrogate on the mobile client devices; And, respond to set in the change of member or the detection of increase: to mobile client device send upgrade or insert (" upsert ") notice, thus more new change or increase member; Upgrade in surrogate list the row of member that is that correspond to change or that increase, thus expression expects to there are the data relevant to this surrogate on the mobile client devices; And setup times stamp in surrogate list, this timestamp represents first when the data relevant to surrogate become the part that mobile client device expects the subscription data had.

Embodiments of the invention also comprise the computer-readable medium with computer executable instructions stored thereon in addition, if performed by computing equipment, so this instruction impels computing equipment to perform a kind of method, and the method comprises: will be used for the local best property of attribute mapping of mobile service object (MBO) to relational structure; Set up the list of unique agent key, this unique agent key is current should be the part of client subscription, wherein this list comprises the sub-mobile service object (MBO) of being quoted by father MBO, and be desirably in synchronous after this sub-mobile service object in mobile client; Determine the set of the current deleted surrogate had of client, it should be the list of the surrogate of a part for client subscription that this deleted surrogate is no longer arranged in current; The deleted surrogate of client is removed from client device data storehouse; Upgrade the surrogate list that client is expected to have; Wherein said renewal comprises: the surrogate had for client, does not perform any operation; New surrogate for client does not also have: inserting line in this surrogate list; And setup times stamp, this timestamp represents the part that first when this surrogate become client and expect to have.

Embodiments of the invention comprise a kind of system in addition, and this system comprises: storer, and it is configured to memory module, and this module comprises mapping block, and this mapping block is configured to be used for the local best property of attribute mapping of mobile service object (MBO) to relational structure; Creation module, its be configured to create current should be a part for client subscription, the list of unique agent key, wherein, this list comprises the sub-mobile service object (MBO) of being quoted by father MBO, and be desirably in synchronous after this sub-mobile service object in mobile client; Determination module, it is configured to the set determining the current deleted surrogate had of client, and this deleted surrogate is no longer arranged in the current list that should be client and subscribe the surrogate of a part for subscription; Evict module from, it is configured to the deleted surrogate removing client from client device data storehouse; Update module, it is configured to the surrogate list that renewal client is expected to have; Wherein, described update module is configured to further: the new surrogate also do not had for client, inserting line in this surrogate list; And setup times stabs, this timestamp represents the part that first when this surrogate become client and expect to have.

Describe structure and the operation of other features and advantages of the present invention and various embodiments of the invention below with reference to the accompanying drawings in detail.It should be noted, the invention is not restricted to specific embodiment described here.This display these embodiments be only for explaination object.Based on being included in this instruction, other embodiment is apparent for those skilled in the relevant art.

Accompanying drawing explanation

Be incorporated in this accompanying drawing also forming an instructions part and illustrate embodiments of the invention, and it is further used for explaining principle of the present invention and those skilled in the relevant art can being made to implement and use the present invention together with instructions.

Fig. 1 is the typical enterprise network according to the embodiment of the present invention.

Fig. 2 is the process flow diagram of the step illustrated according to the embodiment of the present invention, is followed the tracks of and synchronous set member between client and enterprise information system (EIS) by these steps.

Fig. 3 describes the example computer system by implementing embodiments of the invention wherein.

Referring now to accompanying drawing, the present invention is described.In the accompanying drawings, usually, identical reference marker represents identical or intimate element.In addition, usually, the accompanying drawing that first occurs of the numeral reference marker of the reference marker leftmost side.

Embodiment

Introduce

Following detailed description in detail of the present invention relates to the accompanying drawing illustrating the exemplary embodiments consistent with the present invention.Within the spirit and scope of the present invention, other embodiments are also possible, and can modify to these embodiments.Therefore, this detailed description is not intended to limit the present invention.Further, scope of the present invention is defined by claim of enclosing.

It will be apparent to one skilled in the art that as described below, implement in the many different embodiment of the entity that the present invention can explain in software, hardware, firmware and/or accompanying drawing.Having any actual software code implementing specific hardware of the present invention control is not limitation of the present invention.Therefore, operation behavior of the present invention describes when understanding of and can modifying to these embodiments and be out of shape in scope and spirit of the present invention.

Combination in any to the hardware or component software for performing represented function is meaned to the reference of module in the specification and claims.Module needs not to be the entity of strict difinition, and like this, some modules can overlapping hardware and software component functional.Such as, software module can relate to the single file code in program, and this program self is independent software module.Those skilled in the relevant art can understand, such as, according to multiple format or the technology of performance optimization carry out the functional of definition module.

Term

There is provided following definitions for illustrative instead of restricted object, thus contribute to the discussion of the various embodiments understood subsequently.

Except non-specifically difference statement, in an embodiment, refer to mankind user, ageng or one group of user and/or ageng this user be used alternatingly.User can be the member in user's group (namely gathering), and wherein set relates to specific EIS, geographic area (user namely in certain country, region and/or state/province).Except being the human user of member of set, software application or agency also can be the members of set.Therefore, unless specifically stated, term " user " need not refer to human user as used herein.User can be represented by the user ID in EIS or account.User can also be represented by client application.User can have relative login certificate.Login certificate can include but not limited to username and password.Such as, user can be the member of set and have application user name and password.User can also have independent username and password.

As used herein, in an embodiment, term " client " and " mobile device " relate to Terminal Server Client.Client or mobile device can be one or more in user-portable computer, panel computer, PDA, smart mobile phone or PC, as what further describe with reference to the client 102 described in figure 1 and 112a-c below.According to embodiment, client also can be desktop computer, the browser application using HTML5 or internet TV equipment.

As used herein, in one embodiment, term " remote data base " and " client database " relate to storing for the database or persistent data storing the data used by client or mobile device on client or mobile device.In one embodiment, be stored in the remote data base on client or mobile device by synchronous buffer memory EIS data once in a while.

As used herein, in one embodiment, term " upgrades or inserts " and relates to database insertion or upgrade or write to attempt the operation of update, and if due to major key or other unique key restriction and cause inserting unsuccessfully, under subsidiary condition, so resubmit this insertion using as renewal rewards theory.By this way, even if when data can not be inserted in database table as newline, also single insertion successfully can be handed database and do not need the insertion of rollback failure to conclude the business.

As used herein, mobile service object (MBO) is crosspoint.In one embodiment, MBO is SYBASE ^tMthe elementary cell of the exchanges data in wireless platform (SUP).MBO corresponds to the data acquisition from back-end data source, and back-end data source is such as EIS server.Data can from data base querying, web services operations, enterprise application or file.Application on July 15th, 2009, agency's case number be 1933.0720001, name be called " the mobile service object of MetadataDrivenMobileBusiniessObjects(metadata driven) ", number of patent application is 12/503, provide non-limiting example in the U. S. application of 573, its by reference entirety be incorporated into this.

MBO comprises concrete enforcement level details and abstract interface level details.In enforcement level, MBO comprises read-only row and passes to the parameter of back-end data source, and these row comprise the metadata about data in enforcement.In interface level, MBO containment mapping is to the attribute of row, and this attribute corresponds to client performance.MBO can have the operation also comprising parameter and demonstration, and it can be used to create, upgrade or delete data.MBO is can by synchronous business object between enterprise information system (such as, below with reference to the EIS114 that Fig. 1 describes) and client (client 102 such as described below with reference to Fig. 1 and 112a-c).By the storage in local data base 108, can MBO be continued, thus allow during not being connected to EIS114 by client 102 its access.

Member follows the tracks of and data evict system from

Fig. 1 is that prototypical member tracking and data evict system 100 from according to an embodiment of the invention.According to embodiments of the invention, system 100 operates and comprises client 102 and 112a-c in enterprise network.According to a further embodiment of the invention, client 102 can be usually be designated as in many equipment of mobile computing platform or PDA(Personal Digital Assistant), such as but not limited to notebook computer, panel computer, illustrates and Micorsoft according to MicrosoftPocketPC the equipment that CE operating system (OS) operates together, the equipment running SymbianOS, operation the equipment of OS, the Apple provided than the Apple of Dinon by California storehouse thered is provided by the dynamic studies of Waterloo, Ontario, Canada equipment and mobile phone, smart mobile phone, handheld computer, palm PC, laptop computer, super mobile PC and can other wireless mobile apparatus of running client application program 104.Client 112a-c can comprise other wireless mobile computing equipment further or have other data processing equipment of any similar resource restriction as PDA.

Those skilled in the relevant art can be appreciated that, the technology being applied to client 102 described here generally can also be applied to non-mobile device, such as PC.

According to embodiments of the invention, client 102 has client application mounted thereto.According to embodiments of the invention, client application 104 can with equipment input and output (I/O) 106 interface, such as monitor, keyboard, trace ball, pen with means for holding it in right position or touch-screen display, client application 104 can also with local data base 108 interface, it stores the data acquisition that used by client application 104.Local data base 108 comprises the data of the set member corresponding to the user using client 102 and client application 104.

According to embodiments of the invention, client 102 communicates with synchronization server 110.According to a further embodiment of the invention, other client 112a-c communicates with synchronization server 110 similarly.As by various equivalent modifications understood, via any one or more communication ports, various client can be connected to synchronization server 110.Such as, in an exemplary embodiment, the connectivity between client 102 and synchronization server 110 can comprise cellular communications networks and the jump that communicates on the Internet.Various communication is jumped self public or dedicated network, and can comprise and be positioned at the Internet and the online assembly of various special inside.

According to embodiments of the invention, synchronization server 110 is positioned at one or more client 102 and between 112a-c and enterprise information system (EIS) 114.Synchronization server 110 contributes to the change of the related data that seizure is produced by EIS and this change is supplied to client 102 and 112a-c.Synchronization server 110 also contributes to catching the change that produced by client 102 and 112a-c and this change is provided to EIS114.By this way, the data syn-chronization that the spendable data of client 102 in local data base 108 can store with the corresponding data from EIS114, enterprise data system 116.According to embodiments of the invention, synchronization server 110 maintains the buffer memory reflected from enterprise data system 116.In one embodiment, synchronization server 110 utilizes selected data trnascription from enterprise data system 116 to maintain the buffer memory in cache database (not shown), and it corresponds to the MBO classification that client 102 is used by client application 104.

According to embodiments of the invention, EIS114 is connected to synchronization server 110, thus allows synchronization server 110 to provide aforesaid data synchronization service.As is understood by one skilled in the pertinent arts, the communication between EIS114 and synchronization server 110 equally also can pass through any communication port.Those skilled in the relevant art can understand further, and EIS114 and synchronization server 110 can share same physical server or distributed server as the independent component software in it, or even can be compiled as single Combination application program.Therefore, should be appreciated that, synchronization server 110 and EIS114 can be arranged on the multiple diverse locations in enterprise network 100, and its independent computing equipment that is only exemplary and that be shown as without limitation in Fig. 1.

In an embodiment of the present invention, the scope of the type of EIS114 operating parameter is from simple (i.e. primitive) to complicated (namely comprising structure and/or list).Such as, the EIS114 operation creating new client expects to receive the network service with extend markup language (XML) element of nested structure.When creating new client, the set member for the client set of correspondence also correspondingly changes.Based on the attribute of client, the new client created can be the member in multiple set.The non-limiting example of this network service is represented by following xml code.In example below, the new client created can be the member in " US client ", " California client " and " San Jose client " set.As various equivalent modifications understand, can use in other programming language and technology programming language code sample below and create new EIS set member.

According to embodiments of the invention, as previously noticed, EIS114 comprised enterprise data system 116 further or can be attached to enterprise data system 116 communicatedly in addition.According to a further embodiment of the invention, the data in local data base 108 comprise the subset of the data from enterprise data system 116.This subset is to a certain extent based on set member and the subscription of the user relevant to client 102.According to embodiments of the invention, this subset data is the form of mobile service object (" MBO ").Application on June 10th, 2010, name be called " PendingStateManagementforMobileBusinessObjects(manages for the suspended state of mobile service object) " (agency's case number: 1933.1090001), application number is 12/797, describe data line for changing in client 102 table in local data base 108 in the U.S. Patent application of 975 and for submitting the exemplary method via synchronization server 110 change synchronous with EIS114 to, its by reference entirety be incorporated into this.

According to embodiments of the invention, with packet definitions MBO, wherein packet comprises the definition of one or more MBO.By using visual modeling instrument, the set that MBO can be defined as the attribute being similar to domain and the set of operation used by Terminal Server Client.Application on July 20th, 2010, name be called " ParameterValueBindingForMobileBusinessObjects(binds for the parameter value of mobile service object) ", agency's case number be 1933.1460000, describe the exemplary visual modeling method and instrument of binding for the synchronization parameter value of MBO in U.S. Patent application that application number is undetermined, its by reference entirety be incorporated into this.

The non-limiting example of MBO is represented by xml code below.As various equivalent modifications recognized, can use in other programming language and technology programming language code sample below define MBO and create new set member:

Based on above-mentioned typical definition, MBO classification (namely source code) can be generated by MBO code generator.These classifications can be used by client application developer.Such as, developer can write the code such as, thus creates the new client of the member being client set:

Customerc=newCustomer()；

c.setName(″Griffins″)；

c.setPhone(″(555)123-4567″)；

c.setAddress(″123FourSt″)；

c.setCity("Dublin″)；

c.setState("CA")；

c.create()；

There is provided a kind of as follows to upload the typical case that above-mentioned new client is operated to EIS and call:

c.submitPending()；

MyDatabase.synchronize()；

As correlative technology field personnel recognize, the communication between client application 104 and synchronization server 110 can by multitude of different ways process.According to embodiments of the invention, communication framework can be embedded directly within by code generator or the client application 104 that provided by developer.According to another embodiment of the invention, HELPER APPLICATION can be configured in client 102, thus manages the communication with EIS114 via synchronization server 110.

Mobile service object and member entities's model

According to embodiments of the invention, can use be called as from XML application program (" AFX ") openly can the specific area language based on XML carry out modeling MBO.Those skilled in the relevant art will appreciate that, can modeling MBO in a multitude of different ways, comprise by using the chart modeling of visual modeling instrument or by using the text modeling of specific area language (such as AFX).Therefore, this display and discuss, provide by using the example of AFX to be only illustrative rather than restrictive.

According to embodiments of the invention, routine package definition provides that the database of the title defining local data base 108 in client 102 defines, database class declaration and zero or more substantial definition.The identification of database class declaration represents the classification of local data base 108.If be defined, then each the corresponding MBO in substantial definition.Substantial definition defines the item name representing corresponding MBO conversely.

According to embodiments of the invention, entity itself is stored in local data base 108.According to a further embodiment of the invention, use at least one surrogate and replace key and carry out this entity of keying.Surrogate is the key value used by client 102, does not have ability to access EIS, 114 key constructive process for explanation client.Back end enterprise data system 116 does not use surrogate.If Terminal Server Client recognizes the EIS114 for this entity, so this key can be used as to replace key.According to a further embodiment of the invention, by synchronization server 110, surrogate is supplied to client 102, as treating by a series of key of demand assigned.

According to a further embodiment of the invention, substantial definition comprises the Operation Definition for change corresponding in EIS114.Exemplary and nonrestrictive, provide Operation Definition for creating, upgrade or deleting the set member's data in (namely evicting from) client 102 and EIS114.According to embodiments of the invention, substantial definition also can provide name inquiry, and it is that the predefine of being issued for local data base 108 by client 102 is inquired about.According to a further embodiment of the invention, substantial definition also comprises to give a definition, this definition represents: the set member produced by client 102 and subscription change can be disclosed to synchronization server 110, and the set member similarly produced by EIS114 and subscription change can be subscribed to by user or client application 104 thus be downloaded to client 102 and 112a-c.

Non-limiting example object model in conjunction with above-mentioned element is as follows:

In above-mentioned typical object model, the packet " com.example.bank " relevant to the local data base 108 " my-bank " represented by classification " MyDatabase " comprises the single entity being named as " Account ".This entity by keying, has the replacement key defined by account ID by surrogate, and in this case, this surrogate is the actual unique key used by EIS114 back-end system.

According to embodiments of the invention, account entity also has some attributes, comprises aforesaid surrogate and account ID, but also has the Customer ID corresponding to account and account balance.Account entity also defines inquiry " findByCustomer ", and this inquiry considers the special account with corresponding Customer ID (i.e. set member), with location in MBO example and use.

In addition, according to embodiments of the invention, account entity defines the some operations for describing EIS114 operation, for creating, upgrade and deleting the data corresponded to from the entity of enterprise data system 116.

According to embodiments of the invention, code generator runs in packet definitions, thus generates for being included in the code in client application 104.This allows the developer of client application 104 that client application 104 can be made fast to coordinate the download of the change of set member between client 102 and synchronization server 110 and subscription and upload.According to a further embodiment of the invention, code generator also can produce the code performed on synchronization server 110.

In the examples described above, each account represents a MBO example, and each client is the member of set.According to embodiments of the invention, as described above also as shown in typical subject model, MBO can support that the explanation of change is activated the function to EIS114 by those.In an exemplary embodiment, these changes be perform on MBO establishment, renewal or deletion action.These operations can be for the establishment of client, user or other set member, renewal and deletion action.

If create the new set member of such as New Account, so can account.create(be called) account is assigned to local data base 108 by method.Account.delete() method can delete account from local data base 108.According to embodiments of the invention, these amendments are all stored in local data base 108 as the change hung up.According to a further embodiment of the invention, local data base 108 retains the copy of virgin state before modification.If needed, when by EIS114 for the data playback of enterprise data system 116 because of any reason failure, this allows the recovery of local data base 108.

According to embodiments of the invention, when client application 104 prepares the change of hang-up to be committed to synchronization server 110 for when being synchronized to EIS114, call submitPending() method is (such as,), thus the change of hang-up of queue for sending account.submitPending().According to a further embodiment of the invention, the change of this hang-up is delivered in the message, as below by detailed description.

According to a further embodiment of the invention, the message of change that be sent to synchronization server 110, that comprise hang-up also comprises virgin state.By submitting suspended state and virgin state to, EIS114 can avoid, detects or solve multiple conflict.

According to embodiments of the invention, when EIS114 can not manage conflict, if or EIS114 wish that client 102 solves conflict, so EIS114 can provide failure notification for client application 104.According to a further embodiment of the invention, EIS114 can also provide successfully the notice of replay operations for client application 104.

Be provided for below defining the non-limiting example from the client entity (i.e. set member) of the typical case " customer " in database.

In the above example, " state " synchronization parameter is set.According to embodiments of the invention, inner in system 100, this parameter is transformed into " customerpq " entity (persistent query).In one embodiment, the setting of " state " synchronization parameter causes creating in " customerpq " table subscribing to row.

Provided below is the definition of some related entities.Therefore, the non-restrictive example for defining the client entity (namely set member) shown from typical case " customer " in database is as follows:

In one embodiment, for any client being downloaded to client 102, its customer instruction and dos command line DOS are also downloaded.Related product can be downloaded separately.

According to an embodiment, " sql " element (by AFX compiler) in " downloading data " element that the download cursor run at synchronization server 110 place can show automatically from non-limiting example below obtains.According to embodiments of the invention, example code below provides download cursor, slightly revises for the sake of simplicity to it.

Traditional data for persistent query evicts scheme (on March 22nd, 2010) from based on last access time (lastAccessedtime) (being stored in client's table and in customer_pq table).This conventional art operates as follows:

When accessing customer_pq in client database, its last access time is updated.

When accessing client's row in client database, its last access time is updated.

Client's classification preparation method is as follows:

publicstaticvoidevict(intn){...}

Above-mentioned " evicting from " method can delete any customer_pq and client's row that client is not accessed in nearly more than n days.Such as, the conventional art that using method calls " evict(7) " can delete the data be not accessed in 7 days.The shortcoming relevant to this traditional scheme comprises:

1. the last access time utilizing the client of such as MobiLink client to come in managing customer or customer_pq table can cause download conflict.This is because traditional synchro system should not revised download row, because they upload change by performing " playback " operation.This causes the table needing to use the last access time to remain independent, and it can cause the generation of more codes by expansion and need more multi-join query.

2., when using " persistent query " to implement synchronization parameter, do not generate the method for evicting from.In other words, only when using on-demand to subscribe to, it is just available that tradition evicts scheme from, and this can not be supported in all mobile synchronous environments.

3. evict from for member's tracking and data, it is not too accurate for depending on " inactive time-out ".

4. the program does not process " object migration ".Such as, if there is the client " Jim " with state=" NY ", and client 102 has the subscription of New York client (namely having the client of state=" NY "), and so client " Jim " is downloaded to client 102 and is stored in local data base 108.Migrated to the scene of state=" CA " after client under, the customer database in enterprise data system 116 can be upgraded.When client 102 is next synchronous, it can not be downloaded " Jim " again.Problem under this scene is, although local data base 108 still has " Jim " record, this record tool has plenty of the oldState of " NY ".In the embodiments of the invention described below with reference to Fig. 2, by using the member's tracking technique adopting surrogate, " Jim " record is expelled out of automatically from client.

5. the program also will not deleted (namely " evicting from ") and will be downloaded to client, and because client deletes " pq " OK, this deletion should be downloaded.Due to problem (2) above, client is current deletes " pq " OK.

Below with reference to Fig. 2, two kinds of methods solved about the problem 4 of traditional scheme are described.According to embodiments of the invention, first method relates to (parent object) surrogate that tracking has been downloaded to client 102.According to this embodiment, if in second time or operation subsequently, download cursor and again do not find surrogate, so this technology sends " download-delete " to client 102.

In another embodiment, second method follows the tracks of member's change, like this, whenever " subscription attribute " (namely downloading the attribute used in the place clause of cursor) changes, in independent table create " member's trackings " OK, its can download cursor in be cited thus determine should from client 102 deletion row.

In one embodiment, in order to the problem 5 of evicting from about data above solving, if client deletes " pq " OK, so this technology cause for any client, " download-delete " of being quoted by deleted " pq " row.In one embodiment, from download cursor, condition " pq.deleted=0 " is removed.Therefore, as follows from downloading this " removal " of performing cursor:

In one embodiment, if adopt surrogate to follow the tracks of handling object migration, so do not need cursor change above, because download the mode that cursor process may have its oneself process " deletion ".

This technology can cause identical client's row to occur twice in result set, once has pq.deleted=0 and once has pq.deleted=1.This is because multiple " pq " may be there is OK, to be one or morely marked as " deletion " in the plurality of " pq " row, and one or more is not marked as " deletion ".According to embodiments of the invention, in this case, the code of generation can eliminate the row of pq.deleted=1.Deleted mark can be used to the contrast determining " upsert " (namely upgrade/delete) operation and deletion action.In one embodiment, then deletion action is calculated as (x.deleted or pq.deleted).According to embodiments of the invention, if having pq.deleted=1 for all pq provisional capitals of selected client, or this client is deleted, so will " download-delete " to be sent to client.

According to embodiments of the invention, this technology arranges the persistent query relevant to the old net present value of synchronization parameter and subscribes to row (namely customer_pq is capable), and it can be deleted by client automatically in synchronous beginning.According to embodiments of the invention, expect that the user of multiple subscription can use the synchronization parameter of list type.

In message based synchro system, user can not accurately invoke synchronous.In one embodiment, in some cases, synchronously impliedly start.Such as, if user preserves the object relevant to one or more synchronization parameter, or the change of the personalizing parameters of conservation object, wherein any personalizing parameters is all designated as the default value for any synchronization parameter, so, be synchronously call (calling namely to " synchronously " function, program or method) by implicit function and automatically start.

Subscription management technology

According to embodiments of the invention, accurate subscription management method is described below.

When developer uses many-valued (list type) synchronization parameter, be inconvenient for the management of subscribing to row them, the example of this subscription behavior such as implicit Customer_pull_pq entity generated.Such as, user such as, can not run inquiry for their subscription (particularly when there is multiple subscription, when have subscribed multiple product had about the synchronization parameter of " id " attribute with user-dependent client 102).

According to embodiments of the invention, the solution of this problem makes subscription entity open, and give their more descriptive name.Such as, a kind of subscription can be named as " CustomerSubscription ", instead of " Customer_pull_pq ".According to an embodiment, replace the synchronization parameter using list type, developer can use the synchronization parameter of simple types, and in person manages multiple subscription example.

According to this exemplary embodiments, CustomerSubscription entity should have " state " attribute, instead of " stateParam " that use in Customer_pull_pq, to remove " Param " suffix.In one embodiment, client application 104 cannot access inner persistent query (PQ) attribute (such as but not limited to " remoteId ").Such as, these inner PQ attributes can be special java applet bag or C# built-in variable.In one embodiment, " id " PQ attribute can be renamed, thus avoids Name Conflict when having the synchronization parameter being named as " id " when user.

Member follows the tracks of and data evict method from

Fig. 2 is the flow process Figure 200 illustrating step according to an embodiment of the invention, by these steps perform member follow the tracks of and data evict from.

According to one embodiment of present invention, more specifically, flow process Figure 200 illustrates some steps, by these steps, the client application 104 of operated client 102 can follow the tracks of set member, and evict data from after making business object synchronous with EIS114 via synchronization server 110.

By quoting the embodiment explained in Fig. 1 continuously and describing Fig. 2.But Fig. 2 is not limited to this embodiment.It should be noted, the step in process flow diagram need not occur in sequence with shown.

In one embodiment, the method minimizes the number of times of the roundtrip operation of cache database on synchronization server 110 and the amount travelling to and fro between the result data between client 102 and synchronization server 110.According to an embodiment, the method is evicted member's tracking and data from required inquiry and is attached in the storage program of generation, and guarantee that all client synchronization process are all occur in the single remote procedure call (RPC) of buffer memory, and simply submit to as the client id of parameter with finally by the synchronous time simultaneously.In one embodiment, RPC returns two result sets, and it is deleted and upgrades or data inserting stream.According to this exemplary embodiments, correctly maintain client Track Table as spinoff, and do not need the intermediate equipment server that potential a large amount of surrogate set is converted to for any process.

Step 202-224 below with reference to flow process Figure 200 is described in the method for evicting from for member's tracking and data between the sync period of client 102.Such as, for each MBO in subscription, start with father's business object, perform step 204-222 described below.

The method is from step 202 and proceed to step 204, occurs in step 204 via the mapping of intermediate equipment to the local attribute from EIS114.

In step 204, when EIS114 sends data to synchronization server 110 or obtains the data from EIS114 when synchronization server 110, the local attribute from enterprise data system 116 is mapped to relational structure by intermediate equipment.In one embodiment, local attribute is mapped to SYBASE ^tMrelational database table in wireless platform (SUP).In this step, EIS data are mapped to be had in the relational structure of row and column, and wherein often row represents a MBO attribute, and wherein MBO attribute is the local attribute from EIS.Such as, in enterprise data system 116, the set member of such as client can have the attribute such as but not limited to the such as territory of Customer ID, title, password, address.In this example, for each client in enterprise data system 116, there is data line, and identify major key in step 204, this major key identifies each client uniquely.In one embodiment, the major key be identified is used to optimize caching between the sync period between client 102 and EIS114, subsequently.It is upgrade/insert (" upsert ") or delete that major key can indicate this record to change.Such as, be that existed or new establishment by being indicated to fixed number word (it has the major key of such as member id), this major key can be used to establishment and the renewal of the member record copy optimized in the cache database on synchronization server 110.

After local EIS attribute is mapped, method proceeds to step 206.

According to embodiments of the invention, in step 206, surrogate is generated.In one embodiment, surrogate is the Globally Unique Identifier used on synchronization server 110, and it is not used in EIS114.According to embodiments of the invention, generate surrogate in this step and inserted in the cache database on synchronization server 110.In one embodiment, surrogate set is transfused in the temporary table on synchronization server 110.In this step, be each set member, such as client, generate surrogate.After generation surrogate, method proceeds to step 208.

According to embodiments of the invention, in a step 208, creating current should be the list of the surrogate of a part for subscription for client application 104.In this step, all surrogates corresponding to the interested data of client generated in step 206 are determined.In one embodiment, the interest of client to set member is expressed as one or more subscription.In a step 208, surrogate list and the surrogate relevant to the interested data of client of that client previously had, existing synchronized result compare.In one embodiment, when each Terminal Server Client is synchronous, synchronization server 110 for this client be maintained as synchronized result, it has, for the list of the surrogate of data.By this way, the surrogate record being before synchronized to client 102 is maintained on synchronization server 110.According to a further embodiment of the invention, can conclude that client should have the business object based on following two standards:

A) client has about this business object clear and definite " pulling inquiry " subscribes to;

B) this business object is the subobject of the relation of other business object had ordered by client.

In this step, the sample query being used for above-mentioned standard result a) is collected as follows:

Wherein, "? " it is the list of complete surrogate that the pulling subscription of foundation client is gone to client, that be used for MBO.

In one embodiment, step 208 does not consider the timestamp of last amendment.

In this step, collect be used for above-mentioned standard b) the sample query of result as follows:

Above-mentioned inquiry can return all sub-MBO that should be positioned at after synchronously completing in client quoted by father MBO.In one embodiment, the result of above-mentioned two inquiries is used to fill temporary table.

In one embodiment, step 208 comprises: the difference connection collection determining above-mentioned two Query Results, to create the full set of the surrogate that client at the end of synchronous should have.It will be appreciated by those skilled in the art that this difference connection collection does not comprise copying of the surrogate returned by described two inquiries.

According to an embodiment, step 208 comprises: by the full set of this surrogate input temporary table.Shown in exemplary establishment for filling this temporary table is presented below:

CREATEGLOBALTEMPORARYTABLE#should_have_SK(skbigint

PRIMARYKEY)NOTTRANSACTIONAL

Collection difference operation between step 208 can be conceptualized as the surrogate of the set member of such as client, this surrogate be client current have and surrogate not after the synchronization completes in the client surrogate set that should have.In embodiment shown above, this collection difference is stored in the temporary table store list of surrogate.After the list of establishment surrogate, the method proceeds to step 210.

According to embodiments of the invention, in step 210, the surrogate set (the surrogate set namely created in a step 208) whether the current any surrogate had of client is no longer arranged in client and should has is determined.Step 210 can be performed as difference operation, thus determine client current that have, because they are no longer arranged in surrogate set that client should have and should dispossessed all surrogates.The result performing this step is should the surrogate list of dispossessed from the local data base 108 client 102, this member.Step 210 is expressed as being somebody's turn to do " determination " decision whether being no longer arranged in the surrogate set that client should have about given surrogate.According to an embodiment, the current each surrogate had of client is repeated this and " determines ".In one embodiment, utilize inquiry below to formulate this " to determine ":

In one embodiment, cursor " downloads-delete " to the result set for above-mentioned inquiry for client.

If determine the set that surrogate is no longer arranged in client and should has, so control to be ported to step 214, data are expelled out of (deletion) in step 214.On the other hand, if determine surrogate to be in step 210 arranged in the set that client should have, so control to forward step 216 to.

According to embodiments of the invention, in step 214, from the local data base 108 client 102, remove the data of the deleted surrogate corresponding to client.In one embodiment, this step guarantees that this removal is a part for transaction, and like this, when losing efficacy to the determination of synchronization failure, this removal can be rolled back.This step comprises to remove from local data base 108 that correspond to should the table record of dispossessed surrogate.This removal can be represented as deletion statement below:

DELETEFROM<MBO>_client_SK

WHEREskIN(SELECTskFROM#should_delete_SK)

According to one embodiment of present invention, in step 218, dispossessed surrogate is expected to remove the surrogate list (namely the current surrogate that should have of client) had from client.In one embodiment, from " permanent recording " table listing all surrogates that client should have, delete this surrogate, thus perform this step.After being removed by this dispossessed surrogate, the method proceeds to step 220.

In a step 220, the other surrogate needing to evict from is determined whether there is.If determine to exist the other surrogate needing to evict from, so control to forward step 214 to.By this way, step 214 and 218 is repeated for each surrogate being no longer arranged in surrogate set.If determine not exist the other surrogate needing to evict from, so control to forward step 224 to.

According to one embodiment of present invention, in the step 216, the surrogate list that client is expected to have is upgraded.In one embodiment, perform this step via use renewal or insertion transaction, this renewal or insertion transaction can be rolled back in response to synchronous failed determination.Following insertion statement can be expressed as to the renewal of surrogate list:

INSERTINTO<MBO>_client_SK(clientid,sk)ONEXISTINGSKIPselect?,skFROM#should_have_SK

Wherein, "? " be the ID of active user and it is transferred in selection inquiry above as parameter.

In one embodiment, for the surrogate that client has had, above-mentioned insertion statement does not perform any operation (due to " onexistingskip " clause), but for each new surrogate, when this surrogate first become that client should have a part of time, client does not also have the statement of above-mentioned " inserting line " and " via the default setting arranged for first_added setup times stamp ".

According to an embodiment, step 216 comprises: generate and upgrade or insert cursor, thus the renewal of the insertion of new MBO and the MBO of change is sent to client.This renewal or insertion cursor can be represented as inquiry below:

Wherein, input parameter "? " be Customer ID, and last_sync_time is used for this client (twice).

It is that new MBO change (last_modified>) and MBO(changes due to member that final AND clause in above-mentioned selection statement picks up those for client, pulls inquiry or father's relation to change).After surrogate list is updated, controls to be transferred to step 222, remove temporary table in this step.

According to one embodiment of present invention, remove temporary table in step 222, this table list surrogate that client should have and should be deleted surrogate.This removing can be represented as deletion statement below:

deletefrom#should_have_SK

deletefrom#should_delete_SK

After removing temporary table, control to be transferred to step 224.

Then, the method ends at step 224.

According to one embodiment of present invention, the change of the hang-up produced in local data base 108 by client application 104 is not regarded as finally (being namely assigned), is successfully completed synchronous or until EIS114 represents that enterprise data system 116 has been updated thus has reflected the change of this hang-up until determine.Those skilled in the relevant art will appreciate that, the amendment of existing data are comprised to the amendment of the one or more attributes to MBO, as what represent in local data base 108 on client 102.

In one embodiment, when Terminal Server Client initiates the amendment to existing member's data, usually first the virgin state of set member's data is kept in original state tables by performing renewal or deleting (namely evicting from) function, and hang-up change is added in master meter.Application on June 10th, 2010, name be called " MessageBasedSynchronizationForMobileBusinessObjects(is used for the message based synchronous of mobile service object) ", agency's case number be 1933.0940001, number of patent application is 12/813, be described in further detail in the U.S. Patent application of 104 that client application 104 is configured to by using surrogate and Biao Lai process to create, the various mode examples of renewal and removal request, its by reference entirety be incorporated into this.

Example computer system is implemented

Different aspect of the present invention can be implemented by software, firmware, hardware or its combination.Fig. 3 illustrates example computer system 300, and within the system, the present invention or part of the present invention may be implemented as computer-readable code.Such as, can be implemented within the system 300 by the method shown in flow process Figure 200 of Fig. 2.Member's tracking in Fig. 1 and data are evicted system 100 from and also can be implemented within the system 300.Each embodiment of the present invention is described based on this example computer system 300.After having read this explanation, to persons skilled in the relevant art, other computer system and/or Computer Systems Organization how is used will to be apparent to implement the present invention.

Computer system 300 comprises one or more processor, such as processor 304.Processor 304 can be specific use or general service processor.Processor 304 is connected to communications infrastructure 306(such as, bus or network).

Computer system 300 also comprises primary memory 308, is preferably random-access memory (ram), and can comprises supplementary storage 310.Supplementary storage 310 can comprise such as, hard drive 312, removable storing driver 314, flash memory, memory stick and/or any similar non-volatile memories mechanism.Removable storing driver 314 can comprise disk drive, magnetic tape drive, disc drives, flash memory etc.Removable memory driver 314 reads from removable memory module 318 in known manner and/or writes it.Removable memory module 318 can comprise the floppy disk, tape, CD etc. that are read by removable storing driver 314 or write it.Various equivalent modifications will be understood that removable memory module 318 comprises the non-transitory computer readable storage medium with computer software and/or data stored thereon.

In alternate embodiments, supplementary storage 310 can comprise other similar devices for allowing computer program or other instructions to be downloaded to computer system 300.This device can comprise such as removable memory module 322 and interface 320.The example of this device can comprise program cartridge and cartridge interface (such as use in video game apparatus those), removable storage chip (such as EPROM or PROM) and associated socket, and allows software and data to be transferred to other removable memory modules 322 and the interface 320 of computer system 300 from removable memory module 322.

Computer system 300 can also comprise communication interface 324.Communication interface 324 allows software and data to transmit between computer system 300 and external unit.Communication interface 324 can comprise modulator-demodular unit, network interface (such as Ethernet card), communication port, PCMCIA slot and card etc.The software transmitted via communication interface 324 and data are forms of electronics, electromagnetism, light signal, or other signals that can be received by communication interface 324.These signals are provided to communication interface 324 via communication path 326.Communication path 326 carries signal and implements by use electric wire or cable, optical fiber, telephone wire, mobile phone link, RF link or other communication port.

Computer system 300 can comprise graphoscope 330 in addition.According to an embodiment, graphoscope 330 can be combined with display interface 302 and be used to show the display of EIS114 and the synchronization server 110 described in Fig. 1.Graphoscope 330 also can be used as the interactive interface (not shown) via the equipment I in client 102/O106 display.

In this document, term " computer program medium ", " non-transitory computer-readable medium " and " computer usable medium " are generally used to the medium that refers to such as removable memory module 318, removable memory module 322 and be arranged on the hard disk in hard drive 1112.The signal carried by communication path 326 also can be presented as logic described here.Computer program medium and computer usable medium also refer to the storer of such as primary memory 308 and supplementary storage 310, and it remembers semiconductor (such as, DRAM etc.).These computer programs are for computer system 300 provides the device of software.

Computer program (also referred to as computer control logic) is stored in primary memory 308 and/or supplementary storage 310.Computer program can also be received by communication interface 324.When performing these computer programs, computer system 300 can be made to implement the present invention described here.Especially, when performing these computer programs, processor 304 can be made to implement program of the present invention, such as, step in the method that flow process Figure 200 of Fig. 2 discussed above and the system 100 of Fig. 1 are explained.Therefore, this computer program represents the controller of computer system 300.In use implement software situation of the present invention, software can be stored on computer program, and can use removable storing driver 314, interface 320, hard drive 312 or communication interface 324 and be written in computer system 300.

The present invention is also intended to the computer program comprising the software be stored on any computer usable medium.When performing this software in one or more data processing equipment, it impels data processing equipment to operate as described in this.Embodiments of the invention adopt now known or known in the future any computing machine to use or computer-readable recording medium.The example of computer usable medium includes but not limited to main storage means (such as the random access memory of any type), auxilary unit (such as, hard drive, floppy disk, CD ROMS, ZIP disk, tape, magnetic memory apparatus, light storage device, MEMS, nanometer technology memory storage etc.) and communication media (such as, wired and cordless communication network, LAN (Local Area Network), wide area network, in-house network etc.).

Conclusion

Although be described above various embodiment of the present invention, it should be understood that it is only exemplary and nonrestrictive.Those skilled in the relevant art can understand, when not departing from the spirit and scope of the present invention limited in following claims, and the change can carrying out on various forms and in details to it.It should be understood that and the invention is not restricted to these examples.The present invention can be applied to any element as operated with describing at this.Therefore, width of the present invention and scope should not limited by any above-mentioned illustrated embodiment, but only according to claim and their equivalents of enclosing.

Claims

1. a method of data synchronization, it comprises:

The local best property of attribute mapping of mobile service object (MBO) will be used for relational structure;

Create the list of unique agent key, described unique agent key is current should be the part of client subscription, wherein said list comprises the sub-mobile service object (MBO) of being quoted by father's mobile service object MBO, and be desirably in after synchronously completing, described sub-mobile service object is in mobile client;

Determine the set of the current deleted surrogate had of described client, it should be the list of the surrogate of a part for client subscription that described deleted surrogate is no longer arranged in current;

The described deleted surrogate of client is removed from client device data storehouse;

Upgrade the surrogate list that client is expected to have; Wherein said renewal comprises:

For the surrogate that client has had, do not perform any operation; And

For each in the new surrogate that client does not also have:

Inserting line in described surrogate list; And

Setup times stabs, and described timestamp represents the part that first when described new surrogate become client and expect to have.

2. method of data synchronization as claimed in claim 1, wherein, described establishment comprises further: the list storing unique agent key in temporary table, and wherein, described method comprises further, after described renewal:

Remove described temporary table.

3. method of data synchronization as claimed in claim 1, wherein, described in be mapping through intermediate equipment and perform.

4. method of data synchronization as claimed in claim 1, wherein, described mapping is based on described client subscription.

5. method of data synchronization as claimed in claim 4, wherein, described client subscription represents interested in the one or more members in set.

6. method of data synchronization as claimed in claim 5, wherein, described client subscription represents interested in the member in the set relevant to geographic area.

7. method of data synchronization as claimed in claim 1, comprises further:

When needing to delete extra surrogate, repeat described determining step.

8. method of data synchronization as claimed in claim 1, wherein, described establishment comprises further:

Determine whether described client should have mobile service object MBO based on one or more in following:

Described client has and pulls inquiry about the clear and definite of mobile service object MBO; Or

Described mobile service object MBO is by the sub-mobile service object MBO of another MBO of described client subscription.

9. method of data synchronization as claimed in claim 1, comprises further:

For the set of deleted surrogate, delete cursor for described client creates to download.

10. method of data synchronization as claimed in claim 2, wherein, the set of described deleted surrogate is stored in the second temporary table.

11. method of data synchronization as claimed in claim 1, wherein, removal and renewal are parts for database transaction, and it can be rolled back in response to the determination to subsequent data synchronization failure.

12. 1 kinds of systems for data syn-chronization, it comprises:

Storer, it is configured to store each module, and described module comprises:

Mapping block, it is configured to be used for the local best property of attribute mapping of mobile service object (MBO) to relational structure;

Creation module, it is configured to the list creating unique agent key, described unique agent key is current should be the part of client subscription, wherein, described list comprises the sub-mobile service object (MBO) of being quoted by father's mobile service object MBO, and be desirably in after synchronously completing, described sub-mobile service object is in mobile client;

Determination module, it is configured to the set determining the current deleted surrogate had of client, and it should be the list of the surrogate of a part for client subscription that described deleted surrogate is no longer arranged in current;

Evict module from, it is configured to the described deleted surrogate removing client from client device data storehouse;

Upgrade or insert module, it is configured to the surrogate list that renewal client is expected to have; Wherein, described renewal or insert module are configured to further: for each in the new surrogate that described client does not also have:

Inserting line in described surrogate list; And,

13. 1 kinds of methods upgraded for synchrodata between mobile client device and enterprise information system (EIS), described method comprises:

Detect the change to the renewal of mobile client device subscription or the set member of detection mobile service object (MBO);

Creating current should be the surrogate list of overall unique agent key of the part that described mobile client device is subscribed to, wherein, described list comprises the sub-mobile service object (MBO) of being quoted by described mobile service object MBO, and be desirably in after synchronously completing, described sub-mobile service object is on described mobile client device;

Screening is used for the EIS data be buffered of the user relevant to described mobile client device, and wherein, the subset of the EIS data be buffered of being subscribed to by described mobile client device is selected in described screening;

The detection of member is evicted from response to from set:

Send to described mobile client device and delete notice, thus remove dispossessed member; And

Upgrade the row corresponding to described dispossessed member in surrogate list, thus represent undesirably there are the data relevant to this surrogate on the mobile client devices; And

In response to the detection to the change of member in set or in response to the detection to the increase of member in set:

Send to described mobile client device and upgrade or insert (" upsert ") notice, thus more new change or the member that increases;

Upgrade in described surrogate list the row of member that is that correspond to described change or that increase, thus represent the data expecting that existence is relevant to this surrogate on the mobile client devices; And

Setup times stamp in described surrogate list, described timestamp represents first when the data relevant to surrogate become the part that mobile client device expects the subscription data had.

14. methods as claimed in claim 13, wherein said detection comprises further:

Detect the change of the set member of father's mobile service object MBO.